The answer at Where are the Mac OS X alert sound files located? points to three folders where macOS alert sounds are (or at least were) stored:
- /System/Library/Sounds/
- /Library/Sounds/
- /Users/username/Library/Sounds/
Where are the alert tone audio files located in OS X? suggests:
- /System/Library/PrivateFrameworks/ToneLibrary.framework/Versions/A/Resources/AlertTones/
However, on my macOS 14 (Sonoma) laptop, the new alert sounds (Boop, Breeze, Bubble, ...) are not stored in any of these directories. Where are they?